BMW R100 info

Great info on the R100RS and R100/7

My bike:

VIN: 6169223 (interestingly RealOE lists this as:  07/1980 2474 R 100 RT Europe, Production Code: 0386)
Type: BMW 247
Engine #: 81 38 7566 ( below it: 102VB )
Coils: 2x 6V 0 221 100 028  (measure 6.52kOhm secondary & 1.4ohm primary)
ICU/ICM: 0227100103
Hall sensor: 1230 500 148 (BMW always had mechanical advance)

 

http://www.bmbikes.co.uk/specpages/R100RS.htm (1976 – 1984)

http://www.omnilex.com/public/bmw78/

Basic tuning of that day and age: http://mailer.fsu.edu/~jroche/road_rod.html

Ignition systems :
http://www.w6rec.com/duane/bmw/points/index.htm
http://www.largiader.com/articles/ignition/
http://bmwmotorcycletech.info/ignitionsingleplug.htm
http://www.megamanual.com/ms2/Bosch_124.htm
http://web.archive.org/web/20080316033135/www.geocities.com/fwarner_au/mc_things/bmwr_ign_sensor.html
http://maniac.deathstar.org/~flash/ig_trig.html taking the hall sensor apart
http://bmwmotorcycletech.info/sparkplugs.htm Spark plugs
http://bmwmotorcycletech.info/electricalhints.htm Electrical hints
http://www.madelectrical.com/electricaltech/howitworks.shtml Voltage regulators and Alternators

 Some more info on ICU’s (Ignition Control Units)

Here are some common part numbers that different suppliers use for the Bosch 124 module (or it’s exact replacements):
Bosch: 0 227 100 124, 1 227 010 003, 1 227 010 005, 1 227 010 006, 1 227 010 039
Citroen: 96 048 070 80
GM: 90006499
Lucas: DAB 405
Magneti-Marelli: 940 038 508
Opel: 1208243
SAAB: 750 3600
Volvo: 1 332 584

Eventually the last and final one that is also compatible to ALL airheads with and without kickstarter is BMW part#: 12 14 2 325 284 (Temic #1885A2). The final combination I chose the latest option (such as on the 2474 R100RS 11/984 model ):

  • coil: 12121243182 (also suggested: high current hot spark single coil with dual output (BMW part# 12-13-1-244-426 (Bosch 02210500203), also workable is Dyna brown coil with 1.5 ohms, 14K secondary, for 81-92 stock airheads)
  • Spark plug: BOSCH W5DC (NGK BP7ES / Bosch W5DC / Bosch WR5DC+)
  • Ignition Control Unit: 12142325284
  • Enduralast suggests 6v Ignition Coils (x2) – BMW R Airhead; 12 13 1 243 452 / Bosch (Replaces smaller oe Bosch Coils 0 221 100 313, 0 221 101 003, 0 221 124 001, the 452 coils is 1.2ohm, 1.25mH, 13k84ohm secondary & 40-50kV )

From one of the Enduralast pages regarding compatible coils:

  • Stock BMW points & condenser coils from 1970-1980
  • Black coil BMW #: 12 13 1 351 584 Bosch part #: 0 221 100 022 (/5)
  • Black coil BMW #: 12 13 1 243 452 Bosch part #: 0 221 101 003 (/6, /7, early 100)
  • Black coil BMW #: 12 13 1 244 142 & 02-21 100 028 (R80RT, R100/T, CS, RS, RT)

newicm1_tn

uses hall sensor Siemens part No HKZ101 (replacement part: CYHME301)
datasheet: Siemens HKZ101 Hall sensor on BMW Ignition trigger

From Hall sensor HKZ101 datasheet

If your trigger unit has failed, the hall transistor can be replaced with one from a 79-85 VW, 78-83 Audi, or 79-82 Porsche. Take the old part with you when you go to the import car parts place, or cheaper yet, junk yard. A local parts place quoted me $95 for a new one in ’96 and their jobber’s part number was 30-1032. I THINK the Bosch number is 1237011052.

some of these HALL sensors might “fit”… http://www.dapco.com.cn/Upload/CRANK%20AND%20CAMSHAFT%20POSITION%20%20SENSOR.pdf

A typical vertical application:

Bosch_0 227 100 124ew

 

Beru pinouts EnDuraLast inside EnDuraLast pinouts

Should check out these for possible replacement parts:
191905351C (Siemens) TZ1 5WK6 102
191905351B #C184 VW Jetta Audi Ignition Control Module
191905351B #C184 VW Jetta Audi Ignition Control Module
191905351B TCI ignition switch amplifier
191905351A / 0227100142 / 8980534 VW / AUDI Ignition Control Module
191905351A / 0227100142 / 8980534 IGNITION CONTROL MODULE FOR VW / AUDI
0227100142 #C184 Audi Ignition Control Module

From some site these seem to be Part Number equivalents:

Audi:191905351A
Audi:191905351B
Audi:191905351C
Bosch: 0227100142
Bosch: 0227100143
Bosch: 0227100147
Lucas: DAB402
Saab: 8980534
Transpo: BM342
Transpo: BM342E
Valeo: 2595009
150075
583
XE120
2007

HEAVY-DUTY Ignition Module for ALL 1981through 1995 Airheads, $95.00 with bracket
The ignition control module now controls the dwell time independently of the Hall sender,to improve the sometimes uneven startup and cold idle,especially. This also helps maintain accuracy as the old original parts in the Hall sender may wear.

The Boyer has always been a good ignition to consider when the tip of the pre-1979 camshaft was broken off.  Now, with the new model with the updated ignition curve (ALSO available in a modified version for dual-plugging installations) (and supposedly now works OK with a slightly weak battery, low voltage that is, during starting), there is less reason to not recommend it.Below is the Boyer-Bransden Microdigital Electronic Ignition advance curve, courtesy of www.Boyerbransden.com and obtained from Stan Smith when he owned rockypointcycle.

Boyer MicroDigital advance curve0003

Some Sparkplug info

Intended to be uses with non-resistive (non carbon) copper leads with 5kohm Spark caps.

NGK BP7ES
(later Airheads with electronic ignition, R45, R65, R50/5, R100 (1977-84) not 100/7/ T 77-78):
NGK Equivalent to the Bosch W5DC and WR5DC+ spark plug.

NGK BP6ES
(initial airheads with points/condenser, AIRHEADS; R100T/7, R75, R90/6):
Equivalent to the Bosch W6DC, WR6DCPLUS, W7DC, and WR7DCPLUS spark plugs.

NGK BP5ES
(AIRHEADS; R100T/7, R75, R90/6):
Equivalent to the Bosch W7DC, and WR7DCPLUS spark plugs.

 

BMW_R100RSdata

BMW_R100RS_b

78r100wire

R80 Wiring Diagram with Electronic Ignition:

R80-100GS Schematic

’77 R100/7 rebuild: http://www.gasanders.org/bmw/bmwpics.html